C#中常用的Attribute搜集(刚开始...)

ObsoleteAttribute

名字空间: System

函数已经不推荐使用

 

FlagsAttribute

名字空间: System

[FlagsAttribute] enum class MultiHue : short { Black = 0, Red = 1, Green = 2, Blue = 4 };

All possible combinations of values of an Enum with FlagsAttribute:

0 - Black 1 - Red 2 - Green 3 - Red, Green 4 - Blue 5 - Red, Blue 6 - Green, Blue 7 - Red, Green, Blue 8 - 8

 

SerializableAttribute, NonSerializedAttribute

名字空间: System

标记一个字段是否被序列化

 

DllImportAttribute

Win32 API 函数

   1:  [DllImport("User32.dll", EntryPoint="MessageBox")]

   2:  static extern int MessageDialog(int hWnd, string msg, string caption, int msgType);

 

WebMethod

名字空间: System.Web.Services

WebService方法, 有6个属性, 分别是 BufferResponse, CacheDuration, Description, EnableSession, MessageName, TransactionOption

   1:  [WebMethod(TransactionOption=TransactionOption.RequiresNew) ]

   2:  public void Transfer(long Amount, long AcctNumberTo, long AcctNumberFrom) 

   3:  {

   4:  }

DataObjectAttribute, DataObjectFieldAttribute, DataObjectMethodAttribute

名字空间: System.ComponentModel

[DataObjectAttribute] public class NorthwindData { public NorthwindData() {} private int _employeeID; [DataObjectFieldAttribute(true, true, false)] public int EmployeeID { get { return _employeeID; } set { _employeeID = value; } } [DataObjectMethodAttribute(DataObjectMethodType.Select, true)] public static IEnumerable GetAllEmployees() { AccessDataSource ads = new AccessDataSource(); ads.DataSourceMode = SqlDataSourceMode.DataReader; ads.DataFile = "~//App_Data//Northwind.mdb"; ads.SelectCommand = "SELECT EmployeeID,FirstName,LastName FROM Employees"; return ads.Select(DataSourceSelectArguments.Empty); } // Delete the Employee by ID. [DataObjectMethodAttribute(DataObjectMethodType.Delete, true)] public void DeleteEmployeeByID(int employeeID) { throw new Exception("The value passed to the delete method is " + employeeID.ToString()); } }

 

AmbientValueAttribute

名字空间: System.ComponentModel

标记一个属性是否从周围环境获得值, 比如: 一个空间的背景色自动为其父空间的背景色

 

BindableAttribute

名字空间: System.ComponentModel

标记一个属性是否可以被绑定

[Bindable(true)] public int MyProperty { get { // Insert code here. return 0; } set { // Insert code here. } }

 

BrowsableAttribute, CategoryAttribute, DisplayNameAttribute,DescriptionAttribute

DefaultEventAttribute, DefaultPropertyAttribute, DefaultValueAttribute,

DesignerAttribute, DesignerCategoryAttribute, DesignTimeVisibleAttribute, DesignOnlyAttribute

名字空间: System.ComponentModel

设计一个GUI组件时, 标记属性, 事件, 方法在设计器如何显示.

参见: Developing Custom Data-Bound Web Server Controls for ASP.NET 2.0

 

ConditionalAttribute

名字空间: System.Diagnostics

class Test { static void Main() { Console.WriteLine("Calling Method1"); Method1(3); Console.WriteLine("Calling Method2"); Method2(); Console.WriteLine("Using the Debug class"); Debug.Listeners.Add(new ConsoleTraceListener()); Debug.WriteLine("DEBUG is defined"); } [Conditional("CONDITION1")] public static void Method1(int x) { Console.WriteLine("CONDITION1 is defined"); } [Conditional("CONDITION1"), Conditional("Condition2")] public static void Method2() { Console.WriteLine("CONDITION1 or Condition2 is defined"); } } /* When compiled as shown, the application (named ConsoleApp) produces the following output. csc ConsoleApp.cs Calling Method1 Calling Method2 Using the Debug class csc /define:CONDITION1 ConsoleApp.cs Calling Method1 CONDITION1 is defined Calling Method2 CONDITION1 or Condition2 is defined Using the Debug class csc /define:Condition2 ConsoleApp.cs Calling Method1 Calling Method2 CONDITION1 or Condition2 is defined Using the Debug class csc /define:DEBUG ConsoleApp.cs Calling Method1 Calling Method2 Using the Debug class DEBUG is defined */

 

DebuggerBrowserableAttribute, DebuggerDisplayAttribute, DebuggerHiddenAttribute, MonitoringDescriptionAttribute

DebuggerNonUserCodeAttribute

DebuggerStepperBoundaryAttribute

DebuggerStepThroughAttribute

DebuggerTypeProxyAttribute

SwitchAttribute

SwitchLevelAttribute